Audit User Account Disablement
When operating system accounts are disabled, user accessibility is affected. The system must audit account disablement actions so that administator users can detect and respond to such events. Such a capability greatly reduces the risk that operating system accessibility will be negatively affected for extended periods of time and provides logging that can be used for forensic purposes.
To address access requirements, many operating systems can be integrated with enterprise-level authentication/access/auditing mechanisms that meet or exceed access control policy requirements.

Parameter: EXISTS/DOES NOT EXIST

Technical Mechanism: In order to view the currently configured flags for the audit daemon, run the following command:
sudo grep ^flags /etc/security/audit_control
The account modification events are logged by way of the 'ad' flag. If 'ad' is not listed in the result of the check, this is a finding.